The frequency of the recessive allele. Answer: Since we believe that the homozygous recessive for this gene (q2) represents 4% (i.e. = 0.04), the square root (q) is 0.2 (20%). The frequency of the dominant allele.

## What is the frequency of the homozygous recessive genotype in the population?

Calculate the percentage of individuals homozygous for the dominant allele. We know that the frequency of the recessive homozygote genotype is **q2 and equal to 0.09**. Thus, p = 1 – q ∴ p = 1 – 0.30 = 0.70 ∴The homozygote dominants are represented by p2 = (0.70)2 = 0.49 or 49% Page 2 4.

## How do you find the frequency of homozygous dominant?

**Use the Hardy-Weinberg equilibrium.**

- Alleles: p+q=1.
- p=frequency of the dominant allele. …
- p2=frequency of homozygous dominant genotype. …
- In your scenario, the dominant phenotype has a frequency of 0.19 .
- This is misleading, since both the p2 and 2pq terms represent the dominant phenotype. …
- If q2=0.81 , we can determine q .

## What is homozygous recessive?

An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the **genotype of an organism with two recessive alleles** is called homozygous recessive.

## What is the frequency of homozygous?

In the equation, **p ^{2}** represents the frequency of the homozygous genotype AA, q

^{2}represents the frequency of the homozygous genotype aa, and 2pq represents the frequency of the heterozygous genotype Aa. In addition, the sum of the allele frequencies for all the alleles at the locus must be 1, so p + q = 1.

## What will happen to the frequency of the recessive allele?

The answer is the frequency of the recessive allele **will increase**.

## What percent is homozygous dominant?

Assuming a Hardy-Weinberg equilibrium, **21%** of a population is homozygous dominant, 50% is heterozygous, and 29% is homozygous recessive. What percentage of the next generation is predicted to be homozygous recessive?

## Why do the frequencies add up to 1?

For a ratio of 1:1, there are two total outcomes, so the relative frequency of heads is ½ or 0.5 and the relative frequency of tails is the same. … **The sum of relative frequencies is also equal to one**, since the sum of all fractional parts must equal the whole.

## What is the frequency of the allele?

An allele frequency is **calculated by dividing the number of times the allele of interest is observed** in a population by the total number of copies of all the alleles at that particular genetic locus in the population.

## Is AA homozygous recessive?

Homozygous means that both copies of a gene or locus match while heterozygous means that the copies do not match. Two dominant alleles (AA) or **two recessive alleles (aa) are homozygous**. One dominant allele and one recessive allele (Aa) is heterozygous.

## Is homozygous recessive purebred?

If both alleles are are identical, the organism is said to be **homozygous** for that trait. … Likewise, a purebred short plant has two short alleles and is said to be homozygous short. If the two alleles are different, the plant is said to be a hybrid or heterozygous for that trait.